CN201922152U - Power-saving device of digital welding machine - Google Patents
Power-saving device of digital welding machine Download PDFInfo
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- CN201922152U CN201922152U CN201020614092XU CN201020614092U CN201922152U CN 201922152 U CN201922152 U CN 201922152U CN 201020614092X U CN201020614092X U CN 201020614092XU CN 201020614092 U CN201020614092 U CN 201020614092U CN 201922152 U CN201922152 U CN 201922152U
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Abstract
The utility model relates to a power-saving device of a digital welding machine. The power-saving device comprises a welding machine (2), a contactor, a transformer (T1), a mutual inductor detecting input coil (L1-1), a mutual inductor detecting output coil (L1-2) and a master control circuit (1); a main contact (KM1) of the contactor is connected into a power cord connected with the power supply input end of the welding machine (2); the mutual inductor detecting output coil (L1-2) is sheathed on the power cord between the main contact (KM1) of the contactor and the power supply input end of the welding machine (2); the master control circuit (1) comprises a comparison module, a singlechip and a control module; the comparison module comprises a comparator (U2) and an optocoupler 1 (U3); the control module comprises an optocoupler 2 (U4), a triode (Q1) and a relay (CJ5); the contact of the relay (CJ5) is connected with a coil (KM) of the contactor in series and then is connected to the power cord. The power-saving device of a digital welding machine has the advantages that the judgment is precision, the power can be saved, and the outage delay time can be regulated according to actual conditions.
Description
Technical field
The utility model relates to a kind of digital welding machine battery saving arrangement.
Background technology
Welding machine in use has quite a few time to be in Light Condition, and particularly in industries such as shipbuilding, steel constructions, direct current-direct current (AC-DC) welding generally is used in the workpiece fit on, implements spot welding basically, and the welding machine no-load ratio is about 80 percent.Because general welding machine output voltage has 80 volts of voltages on the soldering turret when welding machine does not weld about 80 volts always, both dangerous when welding machine is unloaded like this, welder transformer has consumed a large amount of electric energy again.Thereby the welding machine battery saving arrangement obtained widely using, and announced a kind of " welding machine electricity-saving circuit " as Chinese patent CN97126122.9, can cut off the electricity supply automatically when welding machine is unloaded, plays energy-conservation effect.Yet it adopts comparator and NE555 trigger as control circuit, utilizes capacitor C 10 to play the mode of delay cut-off effect, and when reality was used, the NE555 trigger produced erroneous judgement because of the current disturbing on the circuit easily, caused abnormal power-down or unlatching; Simultaneously, being beneficial to the outage delay time can't accurately control, in case and circuit is made installation, can't change capacitor C 10, thereby can't regulate the time again, when this outage delay time is too short, implement in the process of spot welding in welding, twice of short duration spot welding also can cause circuit erroneous judgement outage at interval, causes the frequent outage of welding machine easily and restarts, and influences its service life; If the outage delay time long, can make again welding machine when zero load because of the long a large amount of electric energy of wasting of delaying time.And, when working and treating machine testing, detect the loop and be articulated in all the time on the major loop by electric capacity, wasted a large amount of electric energy, be unfavorable for energy-conserving and environment-protective; Moreover reference voltage inserts amplifier after the voltage-stablizer voltage stabilizing, and therefore, power save circuit is when work, and when running into bigger voltage pulsation, the fluctuation of sampled voltage is bigger, might surpass threshold voltage, thereby making to produce judges by accident.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of and judges accurately, energy saving and can regulate the digital welding machine battery saving arrangement of outage delay time according to actual conditions.
The purpose of this utility model is achieved in that a kind of digital welding machine battery saving arrangement, described device includes welding machine, contactor, transformer one, transformer detects input coil, transformer detects output winding and governor circuit, on the power line that the main contact of described contactor inserts with the welding machine electric power input links to each other, described transformer detects input coil, the normally closed auxiliary contact of contactor and the secondary windings of transformer one series connection back are inserted on the main contact and the power line between the welding machine electric power input of contactor, the elementary winding of described transformer one inserts the power line input, and described transformer detects on the main contact and the power line between the welding machine electric power input of output line snare as for contactor;
Described governor circuit includes comparison module, single-chip microcomputer and control module, described single-chip microcomputer model is STC12C2052, described comparison module includes comparator, optocoupler one, bleeder circuit one and bleeder circuit two, the model of described optocoupler one U3 is PC817, described bleeder circuit one is made of resistance R 7 and potentiometer one series connection, described resistance R 7 one termination high level, the other end links to each other with the inverting input of comparator, described potentiometer is held ground connection one by one, and the other end links to each other with the inverting input of comparator; Described bleeder circuit two is made of resistance R 8 and potentiometer two series connection, described bleeder circuit two two ends also are connected with diode D2 and capacitor C 5, the potentiometer 21 end ground connection of described bleeder circuit two, the other end links to each other with the normal phase input end of comparator, resistance R 8 one ends of described bleeder circuit two link to each other with the normal phase input end of comparator, the other end links to each other with the negative pole of diode D1, the positive pole of described diode D2 links to each other with the end that above-mentioned transformer detects output winding, and the other end that described transformer detects output winding links to each other with potentiometer two earth terminals of bleeder circuit two; The output of described comparator inserts 1 pin of optocoupler one, 2 pin of described optocoupler one and 3 pin ground connection, and 4 pin of described optocoupler one insert single-chip microcomputer 12 pin;
Described control module includes optocoupler two, triode and relay, the model of described optocoupler two is PC817,14 pin of described single-chip microcomputer insert 2 pin of optocoupler two, 1 pin of described optocoupler two inserts high level through resistance R 4,4 pin of described optocoupler two insert high level, 3 pin of described optocoupler two insert the base stage of triode through resistance R 5, the colelctor electrode of described triode inserts high level, the emitter stage of described triode is ground connection behind the coil of relay, the contact of described relay be connected on the power line after the coil of contactor is connected.
A kind of digital welding machine battery saving arrangement of the utility model, described device also includes button, and the contact of described button and relay is in parallel.
A kind of digital welding machine battery saving arrangement of the utility model, described device also includes temperature detect switch (TDS) and axial flow blower, and the power line input is inserted in described temperature detect switch (TDS) and axial flow blower series connection back.
A kind of digital welding machine battery saving arrangement of the utility model, described device also includes transformer two, described governor circuit also includes power module, the power line input inserts the power module of governor circuit through transformer two, described power module includes bridge rectifier, voltage-stablizer one and voltage-stablizer two, described resistance R 7 one ends connect the output that the high level end is a bridge rectifier, the input of described bridge rectifier links to each other with transformer two, the output of described bridge rectifier links to each other with voltage-stablizer one, described voltage-stablizer one links to each other with voltage-stablizer two, the model of described voltage-stablizer one is LM7812CT, and the model of described voltage-stablizer two is LM7805CT.
Operation principle of the present utility model is:
When unloaded: the coil KM of contactor is in power failure state, this moment, the main contact KM1 of contactor was in open mode, the normally closed auxiliary contact KM2 of contactor is in closure state, electric current is through providing stable high level by voltage-stablizer after by the power module rectifying and wave-filtering behind the transformer T2, again by resistance R 7 and potentiometer RP1 from changing high voltage power taking dividing potential drop, as the inverting input of reference voltage input comparator U2; Power supply will detect little electric current input by the power line input through transformer T1 and transformer detection input coil L1-1, it is less that transformer detection this moment output winding L1-2 goes up induced voltage, at this moment, regulator potentiometer RP1, make that the voltage of input comparator U2 inverting input is the reference voltage of 2.0V, regulator potentiometer RP2 makes that the voltage of input comparator U2 normal phase input end is the sampling voltage of 1.5V then; This moment comparator U2 the output output low level, this moment, optocoupler one U3 was in closed condition, single-chip microcomputer U1 is by 12 pin input high levels, single-chip microcomputer U1 is inner by programme-control 14 pin output high level, and this moment, optocoupler two U4 can't open equally, were in closed condition, therefore the basis of triode Q1 is a low level, triode Q1 is in closed condition equally, and the coil of relay CJ5 is in power failure state, thereby makes the coil KM of contactor keep power failure state;
During welding: when the welding rod contact workpiece of welding machine, make instantaneous short circuit between the power line, become big through the electric current that transformer detects input coil L1-1 this moment, transformer detects output winding L1-2 induced voltage and raises, this moment input comparator U2 positive terminal sampling voltage greater than reference voltage: the output output high level of comparator U2, this moment, optocoupler one U3 was in conducting state, low level instruction of the 12 pin input of single-chip microcomputer U1, instant single-chip microcomputer output 14 pin output low levels, this low level drives optocoupler two U4, be high level on the base stage of this triode Q1, triode Q1 is in conducting state, the coil of relay CJ5 be in electricity condition, thereby make the coil KM of contactor get, this moment contactor the closed welding machine circuit turn-on of main contact KM1, simultaneously, the normally closed auxiliary contact KM2 of contactor opens and cuts off L1-1 and detect ring current; This moment is because operate as normal is kept the induced voltage that transformer detects output winding L1-2, continuous firing by welding current;
When welding finishes, welding current sharply descends, transformer detects output winding L1-2 induced voltage and descends, this moment, sampling voltage was lower than reference voltage, the output of comparator U2 transfers low level once more to, optocoupler one U3 closes, the 12 pin input high levels of single-chip microcomputer U1, this moment, single-chip microcomputer U1 changed the program time status over to, delay time 10 seconds (can set according to the actual requirements), if 12 pin of single-chip microcomputer U1 have the low level signal input in the time-delay, timing program will be reset, the 14 pin output low levels of single-chip microcomputer U1 enter normal operating conditions this moment again simultaneously; If time-delay was through 10 seconds, then 14 pin of single-chip microcomputer U1 are exported high level, two U4 are out of hand for optocoupler, the base stage of triode Q1 loses drive current, the contact of relay CJ5 discharges, the coil KM dead electricity of contactor, and the main contact KM1 of contactor discharges, thereby welding circuit is disconnected, and the welding machine dead electricity quits work; The closed access of the normally closed auxiliary contact KM2 of contactor detected power supply simultaneously, changes unloaded holding state over to.
When needs use welding machine continuously, press the button KT, contact short circuit with relay CJ5, this moment contactor coil KM be in all the time electricity condition, the main contact KM1 closure of contactor make major loop be in all the time electricity condition, the normally closed auxiliary contact KM2 of contactor is in off-state, will detect the loop outage.
Too high when temperature, when surpassing the preset value of temperature switch T, temperature switch T closure makes axial flow blower FAN open circuit is carried out the wind cooling temperature lowering processing.
Compared with prior art, the beneficial effects of the utility model are:
1, judge accurately: existing market similar products operating point will change when voltage pulsation is big, energy saver just can not normally use, in the utility model during mains voltage variations, before the access point of sampling voltage is positioned at voltage-stablizer, thereby when mains fluctuations, make sampling voltage and comparative voltage change synchronously, when preventing mains voltage variations, the misoperation because sampling voltage raises, in mains fluctuations 15% o'clock this device energy operate as normal;
2, antijamming capability is strong: the utility model has guaranteed the accuracy of judging owing to all be provided with optocoupler in the input pin front end of single-chip microcomputer and output pin rear end and isolate, and can not judge by accident because of the abnormal disturbances of electric current; Simultaneously, use Single-chip Controlling, have only the triggered as normal of detection signal single-chip microcomputer just can produce instruction immediately, reduce false triggering, single-chip microcomputer adopts SECO during end-of-job, the surge voltage when crossing the welder transformer outage, and reliable outage, antijamming capability is strong.This is that the time is very short, does not influence operate as normal at all because after single-chip microcomputer sent cut-offing instruction, the input detection can enter the Dead Time of a 0.4s, allows surge voltage not work in the time.And realize that in common analog control circuit such function can be very loaded down with trivial details, as adding after the circuit function circuit also can become complicated, unreliable.So can not do so substantially on the market, just allow and detect elongated this surge of crossing of rising edge time that input capacitance adds ambassador, residual voltage is still arranged on the electric capacity during outage, can not well absorb surge voltage, can not thoroughly solve false triggering like this, can cause that also triggering speed is slack-off.
3, power savings is good: simultaneously, owing to used single-chip microcomputer, setting by program, can set the late release time easily according to actual operating position, than utilizing the capacitor charge and discharge form delay time is regulated, the utility model utilizes single-chip microcomputer that the time is set, and makes delay time comparatively accurate; And when the welding machine operate as normal, can in time disconnect, avoid waste of electric energy, have more energy-saving effect detecting input circuit.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the circuit diagram of the utility model governor circuit.
Among the figure:
Transformer one T1, transformer two T2;
Voltage-stablizer one TM1, voltage-stablizer two TM2;
Potentiometer one RP1, potentiometer two RP2;
Fuse one FU1, fuse two FU2;
Transformer detects input coil L1-1, transformer detects output winding L1-2;
The normally closed auxiliary contact KM2 of the coil KM of contactor, the main contact KM1 of contactor, contactor;
Single-chip microcomputer U1 (STC12C2502), comparator U2 (LM358), optocoupler one U3(PC817), optocoupler two U4 (PC817);
Indicator lamp XD;
Triode Q1 (C9013);
Relay CJ5;
Button KT;
Temperature detect switch (TDS) T;
Axial flow blower FAN.
The specific embodiment
Referring to Fig. 1, the utility model relates to a kind of digital welding machine battery saving arrangement, described device includes welding machine 2, contactor, transformer one T1, transformer detects input coil L1-1, transformer detects output winding L1-2 and governor circuit 1, on the power line that the main contact KM1 of described contactor inserts with welding machine 2 power inputs link to each other, described transformer detects input coil L1-1, the normally closed auxiliary contact KM2 of contactor and the secondary windings of transformer one T1 series connection back are inserted on the main contact KM1 and the power line between welding machine 2 power inputs of contactor, the elementary winding of described transformer one T1 inserts the power line input, and described transformer detects on the main contact KM1 and the power line between welding machine 2 power inputs of output winding L1-2 cover as for contactor;
Described governor circuit 1 includes comparison module, single-chip microcomputer U1 and control module, described single-chip microcomputer U1 model is STC12C2052, described comparison module includes comparator U2, optocoupler one U3, bleeder circuit one and bleeder circuit two, the model of described optocoupler one U3 is PC817, described bleeder circuit one is made of resistance R 7 and potentiometer one RP1 series connection, described resistance R 7 one termination high level, the other end links to each other with the inverting input of comparator U2, described potentiometer one RP1 one end ground connection, the other end links to each other with the inverting input of comparator U2; Described bleeder circuit two is made of resistance R 8 and potentiometer two RP2 series connection, described bleeder circuit two two ends also are connected with diode D2 and capacitor C 5, the potentiometer two RP2 one end ground connection of described bleeder circuit two, the other end links to each other with the normal phase input end of comparator U2, resistance R 8 one ends of described bleeder circuit two link to each other with the normal phase input end of comparator U2, the other end links to each other with the negative pole of diode D1, the positive pole of described diode D2 links to each other with the end that above-mentioned transformer detects output winding L1-2, and the other end that described transformer detects output winding L1-2 links to each other with the potentiometer two RP2 earth terminals of bleeder circuit two; The output of described comparator U2 inserts 1 pin of optocoupler one U3,2 pin of described optocoupler one U3 and 3 pin ground connection, and 4 pin of described optocoupler one U3 insert 12 pin of single-chip microcomputer U1;
Described control module includes optocoupler two U4, triode Q1 and relay CJ5, the model of described optocoupler two U4 is PC817,14 pin of described single-chip microcomputer U1 insert 2 pin of optocoupler two U4,1 pin of described optocoupler two U4 inserts high level through resistance R 4,4 pin of described optocoupler two U4 insert high level, 3 pin of described optocoupler two U4 insert the base stage of triode Q1 through resistance R 5, the colelctor electrode of described triode Q1 inserts high level, the emitter stage of described triode Q1 is ground connection behind the coil of relay CJ5, the contact of described relay CJ5 be connected on the power line after the coil KM of contactor connects.
A kind of digital welding machine battery saving arrangement of the utility model, described device also includes button KT, and the contact of described button KT and relay CJ5 is in parallel.
A kind of digital welding machine battery saving arrangement of the utility model, described device also includes temperature detect switch (TDS) T, axial flow blower FAN and indicator lamp XD, the power line input is inserted in described temperature detect switch (TDS) T and axial flow blower FAN series connection back, and the series loop of described indicator lamp XD and temperature detect switch (TDS) T and axial flow blower FAN is in parallel.
A kind of digital welding machine battery saving arrangement of the utility model, described device also includes transformer two T2, described governor circuit 1 also includes power module, the power line input inserts the power module of governor circuit 1 through transformer two T2, described power module includes bridge rectifier, voltage-stablizer one TM1 and voltage-stablizer two TM2, described resistance R 7 one ends connect the output that the high level end is a bridge rectifier, the input of described bridge rectifier links to each other with transformer two T2, the output of described bridge rectifier links to each other with the input pin of voltage-stablizer one TM1, the output pin output 12V high level of described voltage-stablizer one TM1, the output pin of described voltage-stablizer one TM1 links to each other with the input pin of voltage-stablizer two TM2, the output pin output 5V high level of described voltage-stablizer two TM2, the model of described voltage-stablizer one TM1 is LM7812CT, and the model of described voltage-stablizer two TM2 is LM7805CT.
Claims (5)
1. digital welding machine battery saving arrangement, it is characterized in that: described device includes welding machine (2), contactor, transformer one (T1), transformer detects input coil (L1-1), transformer detects output winding (L1-2) and governor circuit (1), on the power line that the main contact of described contactor (KM1) inserts with welding machine (2) power input links to each other, described transformer detects input coil (L1-1), the normally closed auxiliary contact (KM2) of contactor and the secondary windings of transformer one (T1) series connection back are inserted on the main contact (KM1) and the power line between welding machine (2) power input of contactor, the elementary winding of described transformer one (T1) inserts the power line input, and described transformer detects on the main contact (KM1) and the power line between welding machine (2) power input of output winding (L1-2) cover as for contactor;
Described governor circuit (1) includes comparison module, single-chip microcomputer (U1) and control module, described single-chip microcomputer (U1) model is STC12C2052, described comparison module includes comparator (U2), optocoupler one (U3), bleeder circuit one and bleeder circuit two, the model of described optocoupler one (U3) is PC817, described bleeder circuit one is made of resistance R 7 and potentiometer one (RP1) series connection, described resistance R 7 one termination high level, the other end links to each other with the inverting input of comparator (U2), described potentiometer one (RP1) end ground connection, the other end links to each other with the inverting input of comparator (U2); Described bleeder circuit two is made of resistance R 8 and potentiometer two (RP2) series connection, described bleeder circuit two two ends also are connected with diode D2 and capacitor C 5, potentiometer two (RP2) end ground connection of described bleeder circuit two, the other end links to each other with the normal phase input end of comparator (U2), resistance R 8 one ends of described bleeder circuit two link to each other with the normal phase input end of comparator (U2), the other end links to each other with the negative pole of diode D1, the positive pole of described diode D2 links to each other with the end that above-mentioned transformer detects output winding (L1-2), and the other end that described transformer detects output winding (L1-2) links to each other with potentiometer two (RP2) earth terminal of bleeder circuit two; The output of described comparator (U2) inserts 1 pin of optocoupler one (U3), 2 pin of described optocoupler one (U3) and 3 pin ground connection, and 4 pin of described optocoupler one (U3) insert single-chip microcomputer (U1) 12 pin;
Described control module includes optocoupler two (U4), triode (Q1) and relay (CJ5), the model of described optocoupler two (U4) is PC817,14 pin of described single-chip microcomputer (U1) insert 2 pin of optocoupler two (U4), 1 pin of described optocoupler two (U4) inserts high level through resistance R 4,4 pin of described optocoupler two (U4) insert high level, 3 pin of described optocoupler two (U4) insert the base stage of triode (Q1) through resistance R 5, the colelctor electrode of described triode (Q1) inserts high level, the emitter stage of described triode (Q1) ground connection behind the coil of relay (CJ5), the contact of described relay (CJ5) be connected on the power line after the coil (KM) of contactor is connected.
2. a kind of according to claim 1 digital welding machine battery saving arrangement is characterized in that: described device also includes button (KT), and described button (KT) is in parallel with the contact of relay (CJ5).
3. a kind of as claimed in claim 1 or 2 digital welding machine battery saving arrangement, it is characterized in that: described device also includes temperature detect switch (TDS) (T) and axial flow blower (FAN), and the power line input is inserted in described temperature detect switch (TDS) (T) and axial flow blower (FAN) series connection back.
4. a kind of as claimed in claim 1 or 2 digital welding machine battery saving arrangement, it is characterized in that: described device also includes transformer two (T2), described governor circuit (1) also includes power module, the power line input inserts the power module of governor circuit (1) through transformer two (T2), described power module includes bridge rectifier, voltage-stablizer one (TM1) and voltage-stablizer two (TM2), described resistance R 7 one ends connect the output that the high level end is a bridge rectifier, the input of described bridge rectifier links to each other with transformer two (T2), the output of described bridge rectifier links to each other with voltage-stablizer one (TM1), described voltage-stablizer one (TM1) links to each other with voltage-stablizer two (TM2), the model of described voltage-stablizer one (TM1) is LM7812CT, and the model of described voltage-stablizer two (TM2) is LM7805CT.
5. as a kind of digital welding machine battery saving arrangement as described in the claim 3, it is characterized in that: described device also includes transformer two (T2), described governor circuit (1) also includes power module, the power line input inserts the power module of governor circuit (1) through transformer two (T2), described power module includes bridge rectifier, voltage-stablizer one (TM1) and voltage-stablizer two (TM2), described resistance R 7 one ends connect the output that the high level end is a bridge rectifier, the input of described bridge rectifier links to each other with transformer two (T2), the output of described bridge rectifier links to each other with voltage-stablizer one (TM1), described voltage-stablizer one (TM1) links to each other with voltage-stablizer two (TM2), the model of described voltage-stablizer one (TM1) is LM7812CT, and the model of described voltage-stablizer two (TM2) is LM7805CT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020614092XU CN201922152U (en) | 2010-11-19 | 2010-11-19 | Power-saving device of digital welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020614092XU CN201922152U (en) | 2010-11-19 | 2010-11-19 | Power-saving device of digital welding machine |
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| Publication Number | Publication Date |
|---|---|
| CN201922152U true CN201922152U (en) | 2011-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020614092XU Expired - Lifetime CN201922152U (en) | 2010-11-19 | 2010-11-19 | Power-saving device of digital welding machine |
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| CN (1) | CN201922152U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102009249A (en) * | 2010-11-19 | 2011-04-13 | 中船澄西船舶修造有限公司 | Digital electricity saving device for welding machine |
| CN106312254A (en) * | 2016-09-22 | 2017-01-11 | 五冶集团上海有限公司 | Energy-saving control circuit for power supply of gas shielded welding machine |
-
2010
- 2010-11-19 CN CN201020614092XU patent/CN201922152U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102009249A (en) * | 2010-11-19 | 2011-04-13 | 中船澄西船舶修造有限公司 | Digital electricity saving device for welding machine |
| CN102009249B (en) * | 2010-11-19 | 2013-12-11 | 中船澄西船舶修造有限公司 | Digital electricity saving device for welding machine |
| CN106312254A (en) * | 2016-09-22 | 2017-01-11 | 五冶集团上海有限公司 | Energy-saving control circuit for power supply of gas shielded welding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110810 Effective date of abandoning: 20131211 |
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| RGAV | Abandon patent right to avoid regrant |